Entomological Society. 535 



4 (42). C. (Orthopteiius) Smithii, MacL. South Africa. 



5 (43). C. (Arthropterus) MacLeaii, Donov. New Holland. 



6 (44). C. (Phymatopterus) /j/ce«A', Westw. New Holland. 



7 (45). C. (HoMOPTERus) BrasUiensis, Miers. Brazil. 



8 (4G). C. (Pleuropterus) Westermanni, Westw. Java. 



ENTOMOLOGICAL SOCIETY, 



February 1st, 1841. — G. R. Waterhouse, Esq., in the Chair. 



llie Secretary called the attention of the Meeting to the condition 

 in which the fine painting of the Raising of Lazarus, by Sebastian 

 Del Piombo, in the National Gallery, was stated by Professor 

 Waagen to be in at the present time ; the picture having been trans- 

 ferred to canvass, on which it was affixed with paste, which material 

 was now attacked by insects, regarded by Mr. Westwood as the 

 Anobium paniceum, an insect well known to attack preparations of 

 flour, such as wafers, &c. The plans suggested at a former meeting 

 for the destruction of insects which attack paintings on panel, or the 

 stretching-frames, would be inapplicable to the present case, and it 

 would be very dangerous to saturate the back of the picture with 

 any solution which would affect the paste so as to render it un- 

 palatable to the insects, or to destroy them. Mr. Gutch considered 

 that in the case of so valuable a picture as this is, it would be most 

 advisable to reline the picture with fresh canvass, employing paste 

 in which a little corrosive sublimate had been mixed ; he had con- 

 stantly used that material, and had always found it perfectly effectual 

 in preventing the attacks of insects. Mr. Waterhouse, however, 

 strongly objected to the use of corrosive sublimate, and suggested 

 that an air-tight frame or flat box should be ])laced behind the entire 

 picture, a space of about an inch being left between the picture and 

 the frame-work ; and that the inclosed air should be strongly im- 

 pregnated with prussic acid, which he had no doubt would destroy 

 the insects. 



A letter from the Rev. A. W. Griesbach to the Secretary was read, 

 relative to the Economy of the Pea-beetle {Bruchns grunarius), which 

 he had found to undergo its transformations within the pea, and not 

 in the earth, as had been stated by Mr. Westwood in an article in 

 the Gardener's Magazine. Mr. Westwood stated that he had him- 

 self had several previous opportunities of discovering the error, having 

 received a quantity of peas and other leguminous seeds from Mr. 

 Loudon and Dr. Lindley, some of which contained Bruchi in the 

 perfect state. 



The completion of a memoir on the EvaiiiidcE and some allied 

 genera of Hymenopterous insects, by J. O. Westwood, F.L.S., was 

 read. 



In this extended memoir, commenced in 1836, the author, after 

 tracing the characters and relations of the fc-mily EvaniidcE, and no- 

 ticing the views entertained respecting it by various authors, gives 

 a detailed account (illustrated with numerous figures of the typical 



